Steam-generator.



No. 687,228. Pa ltented Nov. 26, mm.

C. J. A. GRILL-E.

STEAM GENERATOR.

(Application filed Dec. 5, 1900.)

(No Model.) 2 Sheets-Sheet I.

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No. 687,223. Patented Nov. 26, 1901.

c. .1. A. GRILLE.

.STEAM GENERATOR.

(Application filed Dec. 5, 1900.)

2 Sheets-8heet 2.

(No Model.)

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TATES LATENT FFICEQ CHARLES JOSEPH ANTOINE GRILLE, OF PARIS, FRANCE, ASSIGNOR TO THE SOCIETE SOLIGNAC GRILLE & COMPAGNIE, OF PARIS, FRANCE.

STEAM- G ENERATOR.

SPECIFICATION forming part of Letters Patent NO. 687,228, dated November 26, 1901. Application filed December 5, 1900. Serial No. 38,826. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES JOSEPH AN- TOINE GRILLE, engineer, of 67 Rue de la Vietoire, in the city of Paris, Republic of France,

have invented an Improved Steam-Generator,

of which the followingis a full, clear, and exact description.

This invention relates to an improved steam-boiler suited for marine, traction, and general purposes. This improved steamboiler consists, essentially, of a vaporizer formed of a nest of tubes, each bent to a D form and connected at each end to'a feeddrum at two diametrically opposite points, the water-inlet being at the lower part and the steam-outlet at the upper part of said drum, the steam thus passing directly into the steam-space. Each tube is provided at its lower end with a diaphragm or twyer for regulating the admission of water proportionately to the evaporating power of the tube.

The present improvement consists, sub stantially, in mounting the drum, together with the nest of tubes,upon asupporting-frame capable of pivoting upon a horizontal axis parallel to the boiler-front, so as to admit of the Whole of the generator being swung outward from its setting and completely exposed.

To be better understood, I have represented my improved steam-generator in the accompanying drawings.

Figure 1 shows in section my steam-generator when the boiler is stationary. Fig. 2 shows in section my steam-generator when the boiler is mounted to swing.

In both figures the same letters of reference denote like parts.

As shown in the drawings, my improved steam-generator comprises a water-drum a, forming a store of heatenergy and provided at its lower and upper parts with headers b c, into'which open the two ends of a nest of D-shaped vaporizing-tubes d. The end of each tube cl which connects with header b is provided with a twyer e, which forms a diaphragm, having a small orifice f for limiting the admission of water to said tube proportionately to the evaporative power'of the 50 tube and offering such resistance to the back flow of the steam generated in the tube as to force it to flow out through the upper branch of the tube.

The twyers e are held in place'in the ends of the tubes 01 by means of perforated thimbles g, carried by plugs h, closing the cleaning and inspection holes opposite the end of each tube, these perforated thimbles also serving as strainers to prevent the obstruction of the diaphragms by any foreign mat: 6o ter. Any other suitable means of contracting the inlet-orifices of tubesd may, however, be adopted.

The drum a is supplied with Water by any suitable and usual means so that the waterlevel shall be about two-thirds the capacity of the drum, leaving the remainder to form the steam-space.

As the drum a is situated between the two limbs of the tubes d, the whole mass of water forming the store of heat energy will be in close proximity to the twyers, and thus insure a constant feed to the tubes,however energetic may be the circulation, while the steam generated in the tubes d passes direct into the steam-dome.

My improvement insures a constant feed to the tubular nest, even when the circulation is very energetic, as water is admitted in the vaporizing-tubes in a continuous mannor under the influence of gravity and the flowing thereof is regulated by the twyers or diaphragms proportionately to the vaporizing power of such tubes. On the other hand, no back pressure liable to produce a backward flow of the water can take place, as the steam generated directly and freely comes into the steam-space. The ends of the tubes at may, however, be connected directly to the drum a. 4

The above-described construction, moreover, possesses the advantage of reducing the total height ofthe boiler, lowering the center of gravity, and insuring greater stability.

Fig. 2 shows a modification wherein the Whole of the drum a and nest of tubes (Z are mounted upon a supporting-frame t', capable of turning upon a horizontal shaft j, placed parallel to the boiler-front and as near the ground as possible, so that the drum a and mo tubes d may be swung outward from the setting to the position shown in broken lines, and thus expose to view and render easily accessible all parts of the boiler, thereby enabling it to be readily inspected or cleaned or repairedsuch as the renewing of a tube, for example.

By mounting the boiler to swing on an axis, as described, the boiler need only be accessible from the front, as access will not be needed from the side or rear, which is a great advantage where the space is limited, as in the case ofmarine boilers, for example.

The general arrangement of the boiler lends itself to this mode of mounting it to oscillate as described, so that all the parts will be exposed to view without dismounting any part, thus admitting of cleaning, inspection, or repairs being efiected withoutany difficulty in a very short space of time and within a very limited space in front of the boiler. It is,

however, to be understood that this method of mounting the boiler to swing on an axis may be applied to other types of boilers.

This improved system of boiler may be varied in form and dimensions and the accessory arrangements may be varied to suit different applications.

I claim In combination, a water-feed drum, the D-Shaped vaporizing tubes between the branches of which the feed-drum is located and connected at its diametrically opposite points, and means located at the lower waterinlet end of the Vaporizer-tube for limiting the admission of water thereto, substantially as described.

The foregoing specification of my improved steam-generator signed by me this 20th day of November, 1900.

CHARLES JOSEPH ANTOINE GRILLE.

Witnesses:

EDWARD 1. MAGLEAN, MAURICE H. PIGNET. 

